Sleeping baby doorknob sign



FIG. 1 is a front elevation view.

FIG. 2 is a side elevation view, the opposite side being a mirror image thereof.

FIG. 3 is a rear elevation view; and,

FIG. 4 is the top plan view, the bottom plan view being a mirror image with the omission of the center cut line. 

The ornamental design for a sleeping baby doorknob sign, as shown and described. 